A Metal Having a Work Function of 2

Multiple Choice

A metal having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 4.0 eV. What is the maximum kinetic energy of the photoelectrons produced by this light? (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

A) 2.6 × 10^-19 J
B) 3.8 × 10^-19 J
C) 4.7 × 10^-19 J
D) 5.5 × 10^-19 J
E) 6.4 × 10^-19 J